[  472.780031] netdevsim netdevsim530 eni530np1: renamed from eth1
[  472.780581] netdevsim netdevsim321 eni321np1: renamed from eth0
[  472.855359] Could not find device with ifindex 2000 in netnsfd 11
[  472.855437] Could not find netns with fd: 2000
[  472.855477] Cannot link a netdevsim to itself
[  472.855523] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).